Chi III Greater Noida mein investment sahi hai?

Chi III Greater Noida keeps popping up. I'm looking for a bigger 3BHK, good for kids' school admission. My wife's priority is safety. Heard mixed reviews about Eros Group's projects there. Anyone invested recently? Rental yield kya scene hai? Not sure if it's better than Sector 150. Under-construction ka risk toh hai, but ready-to-move is expensive. Any insights on Noida Extension vs Greater Noida for appreciation? Seeking advice, confused hu thoda. Hope someone can guide.